Silliest fish I have is my bristlenose pleco. I finally had to pull the amano shrimp from his tank as he would *not* stop dive-bombing them.

He'd hang out at the top of the tank, wait for one of them to wander out into the open, then fling himself down, smash them into the substrate, indulge in a mosh-pit worthy pleco-noogie wriggling, then sprint off and hide behind some driftwood, peeking out to watch 'em stagger back, dazed, to their little shrimpy feet. Either he's got a really low sense of humor, or amano are spikey enough to make good tummy scratchers.

That's awesome. I demand a video as proof and for side-splitting purposes.